Keyless lock.



B. A. HURWITZ.

KEYLESS LOCK.

APPLICATION FILED APR. 22. ms.

-1 06,540. Patented Nov; 2 916.

2 SHEETS-SH W/TNESSES: v H W INVENTOR z/z mw/Z/Zz/wz? B. A. HURWITZ. KEYLESS LOCK; APPLICATION mm mm. 22. I916.

Patented Nov. 28, 1916.

2 SHEETS-SHEET 2.

Mfg.

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BENJAMIN A. HUEWITZ, OF KINGSTON, NEW YORK, ASSIGNOR 0F ONE-HALF T0 JACOB I-I. ROSEN, OF NEW YORK, N. Y.

KEYLESS LOCK.

Application filed April 22, 1916.

To all whom it may concern: v

Be it known that I, BENJAMIN A. HUR- wrrz, a subject of the Czar of Russia, and a resident of Kingston, in the county of Ulster and State of New York, have invented a certain new and useful Improvement in Keyless Locks, of which the following is a specification.

My present invention relates generally to keyless locks, and more particularly to a door lock of the permutation type, my object being to provide a simple, inexpensive arrangement, and one including certain novel details, as hereinafter described, whereby certain advantages, hereinafter mentioned, may be obtained. 1

Among the other objects of my invention, I aim to provide a lock of this type, including dials upon both the inner and outer faces of a door, so arranged and constructed that the combination may be readily changed from the inside of the door only, and where by such change may be readily and conveniently effected. r r

The various other objects of the invention, together with the advantages resulting therefrom, will be apparent from the following description of the construction, operation, and arrangement thereof, reference being made to the accompanying drawings, forming a part of this specification, and where Figure 1 is an elevation of my improved door lock, looking from the inside of the door and at the inside door plate. Fig. 2 is a vertical section through the door and a portion of the door casing, and through my improved lock with the parts in position 00- inciding with the position of the parts in Fig. 1. Fig. 3 is a fragmentary elevation on a substantially reduced scale showing the dials reversed relative to the position shown in Fig. 1'. Fig. 4 is a View similar to Fig. 2, illustrating the parts in position coinciding with the position of the dials shown in Fig. 8. Fig. '5 is a'detail vertical section taken substantially on line 5-5 of Fig. 4. Fig.

- 6 is a detail section through one of the tumblers and dial spindles, taken substantially on line 66 of Fig. 5. Fig. 7 is a detail perspective view of the locking bolt removed. Fig. 8 is a detail perspective View of one of the dials, and a portion of its spindle indetached relation. Fig. 9 is a detail perspective view of one of the tumblers, and

Specification of Letters Patent.

Patented Nov. as, rare.

Serial No. 92,917.

Fig. 10 is a view partly in elevation and partly broken away and in section illustrating a slightly modified form of bolt throw. Referring now to these figures, the locking'bolt 10 as provided by my invention, slides transversely within and out of the caslng 11, and is provided with a centrally recessed outer face 12 into which recess the reduced end 13 of'abolt throwing arm 1 1 projects, the opposite end of said'arm having a square bearing engaging a squared rotatable shaft 15, which projects through the casing and through the inner and outer door plates 16 and 17 and is provided with operating knobs at its extremities, one of which isseen at 18 in Fig. 1.

The structure as ,thus described is sho n inFigs. 2 and tin particular, but may be varied as desired with respect tothe particular means for throwing the bolt 10, and instead of the arm 14, a gear 19, as shown in Fig. 10, employed, in mesh with a rack 20 along the adjacent edge of the bolt 10 as shown in said figure.

In any instance, the bolt 10 as shown is provided atits inner face with a series of projecting lugs 21, the series being in alinement parallel with the longitudinal axis of the bolt and adapted for passage through the diametrical slots in the adjacent faces of tumblers 28, of whichthere are a series, alike in number to the lugs 21, arranged at one side of the path of movement of the bolt 10, each of the tumblers so formed having a gear 2 1. in mesh with the gear 25 of its respective spindle 26, the spindle having teeth extending along the major portion thereof, which engage with teeth internally of the gear member 25, the latter of which, as best seen in Fig. 5, is tubular in form, and has bearings rotatably held in connection with the opposite face plates of the lock cas- Each of the spindles 26 extends not only through the casing 11, but also through the inner and outer door plates 16 and 17 and is provided beyond the outer door plate 17 with a solid rigid and preferably integral dial head 27, the opposite end of the spindle, extending beyond the inner door plate 16, being provided with a threaded axial opening 28 by which to receive a machine screw 29 for holdinga detachable inner dial 30, the dial having internal teeth engaging the inner ends of the teeth of the spindle. Thus,

by rotating either the integral outer dial 27 or the detachable inner dial 30, the spindles 26 are rotated, and rotation of their gear members 25, in mesh with the gears 2-1 of the tumblers 23, cause rotation of the tumblers to aline their diametrical slots 22 for the passage of the bolt lugs 21 therethrough, the inner and outer door plates 16 and 17 having dial plates 31 against which the dials 27 and 30 are disposed, provided with diametrically opposed index points 32 and 33 for a purpose to be presently described.

Each of the tumblers 23 is provided with leaf springs 3 L disposed against one side wall of the diametrical slot 22, one end of the spring being secured, and the other free end thereof being bent slightly toward the opposite wall of the slot so as to normally reduce the width of the slot at one end only. Thus with the tumblers 23 turned to the position shown in Fig. 2, the free ends of the several springs 3% are toward the door casing, so that the bolt 10 is free for movement into the keeper 35, it being noted that, when the bolt lugs 21 have passed through the diametrical slot 22, they are, by the free ends of the springs 34, prevented from repassing through the slot 22 in a relatively opposite direction, it being, therefore, necessary to turn the several tumblers a half turn before the bolt can be withdrawn to unlock the door, or in other words, to the position shown in Fig. at, wherein the free ends of the springs 34 are turned away from the door casing.

It is obvious with the dial plates 31 and their diametrically opposed index points 32 and 33, the proper combination numbers upon the dial heads 27 and 30 are registered with the index point 32 to throw the bolt outwardly and are reversed and registered with the index point 33 to withdraw the bolt 10 for the purpose of unlocking the door. It is obvious, furthe more, that inasmuch as the. outer dial knobs 27 are solid with the spindles 26, it is impossible to change the combination from the outside of the door, and it is equally apparent that, by withdrawing the machine screws 29, the detachable dials 30 may be withdrawn and slightly turned to change the combination at the inside of the door, if this only is desired. Likewise, by detaching the dial 30, the spindle 26 may be entirely withdrawn toward the outside of the door and placed after slight turning so that the combination may be changed at the outside of the door, as

well as uponthe inside. It is furthermore apparent that this change may be effected quickly and conveniently, and that the means provided for throwing the bolt enable ready movement thereof when the several tumblers are properly alined. I

It is to be understood, of course, that the particular relative arrangement of the several spindles 26 as shown in the figures of the drawing, need not be followed, but may be changed to place the several spindles in alinement with one another, either vertically or horizontally, and connected either directly or through other gear members with the gears of the tumblers.

It is also to be understood that I may change the size and particularly the numbers of the dials, as well as the tumblers, so as to increase or decrease the number shown in the drawings.

1 claim 5" 1. In a keyless lock, the combination of a casing, a sliding bolt within said casing having lugs projecting therefrom at one side, tumblers arranged in the path of movement of the lugs to normally look the bolt against movement, and having slots through which the lugs may pass in the movements of the bolt, means for moving the bolt in opposite directions, spindles extending through said casing and having longitudinal teeth, gears within the casing having tubular portions internally toothed and receiving the spindles, said tubular portions also having bearings in the casing, the said tumblers having gears engaged by the said gear members whereby to rotate the tumblers from the spindles, dials connected to the opposite ends of said spindles, one of said dials of each spindle being rigid therewith, and the other dial having internal teeth engaging the teeth at the respective end of the spindle, said end of the spindle having an axial threaded opening, and a screw member engaging the said threaded end opening of the spindle and bearing against the said internally toothed dial to secure the latter in connection with the spindle.

2. In a keyless lock, the combination of a casing, a sliding bolt within said casing having lugs projecting therefrom at one side, tumblers arranged in the path of movement of the lugs to normally lock the bolt against movement and having slots through which the lugs may pass in the movements of the bolt, means for moving the bolt in opposite direc ions, spindles extending through said casing and having longitudinal teeth, gears within the casing having tubular portlons internally toothed andreceiving the spindles, said tubular portions also having bearings in the casing, the said tumblers having gears engaged by the said gear members whereby to rotate the tumblers from the spindles, dials connected to the opposite ends of said spindles, one of the dials of each spindle being rigid therewith, and the other dial being detachably connected to the spindle, whereby upon its removal the spindle may be withdrawn from its respective gear member. 7

3. In a keyless lock, the combination of a casing, a sliding bolt within said casing having lugs projecting therefrom, tumblers arranged in the path of movement of the lugs and having slots through which the lugs may pass, spindles extending through said casing and having operative connections therein with the tumblers, and dials connected to opposite ends of said spindles, said connections including a gear carried by each tumbler, and a spindle actuated gear in engagement with each tumbler gear, said last gear being detachably connected to the spindle and having bearing in the casing whereby to permit the spindle to be Withdrawn.

l. In a keyless lock, the combination of a casing, a sliding bolt within said casing having lugs projecting therefrom, tumblers arranged in the path of movement of the lugs and having slots through which the lugs may pass, spindles extending through said casing and having operative connections therein with the tumblers and provided with longitudinal teeth, and dials connected to opposite ends of said spindles, one of said dials of each spindle being rigid therewith, and the other dial being removable therefrom and having inner longitudinal teeth engaging the teeth of the spindle.

5. In a keyless lock, the combination of a casing, a sliding bolt within said casing having lugs projecting therefrom, tumblers arranged in the path of movement of the lugs and having slots through which the lugs may pass, spindles extending through said casing and having operative connections therein with the tumblers, and dials connected to opposite ends of said spindles, each of said tumblers having a spring within and at one side of its slot, secured thereto at one end and having its opposite free end extending angularly within the slot to reduce the width of the latter at the opposite ends thereof, and lock the bolt in its outer and retracted position without turning the tumblers.

6. In a keyless lock, the combination of a sliding bolt having projecting portions, of

rotatable tumblers arranged in the path of its slot whereby to lock the bolt in both its outer and retracted positions without turning the tumblers.

T. In a keyless lock, the combination of a sliding bolt having projecting portions, tumblers controlling movement of the bolt and having slots through which said proj ecting portions of the bolt may pass, means carried by each of the tumblers for locking the bolt at the limit of its movement in either direction without turning the tumblers from position permitting such movement, and dial spindles connected to and controlling movements of the said tumblers.

8. In a keyless lock, the combination of a sliding bolt having projecting portions, tumblers controlling movement of the bolt and in the path of said projecting portions thereof, and having slots through which the projecting portions may pass, and dial spindles connected to and controlling movement of the said tumblers, each of said dial spindles having a rigid dial at one end and having teeth extending therealong to its opposite end, a detachable dial at the latter end of the spindle having internal teeth for en-. gagement with the teeth of the spindle, and means for normally securing the said detachable dial in engagement with the BENJAMIN A. HURIVITZ.

spindle.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

